EP2345801A1 - Centrifugal oil separator for blow-by gas of combustion engine - Google Patents

Centrifugal oil separator for blow-by gas of combustion engine Download PDF

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Publication number
EP2345801A1
EP2345801A1 EP11002670A EP11002670A EP2345801A1 EP 2345801 A1 EP2345801 A1 EP 2345801A1 EP 11002670 A EP11002670 A EP 11002670A EP 11002670 A EP11002670 A EP 11002670A EP 2345801 A1 EP2345801 A1 EP 2345801A1
Authority
EP
European Patent Office
Prior art keywords
oil separator
centrifugal oil
combustion engine
drive shaft
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11002670A
Other languages
German (de)
French (fr)
Other versions
EP2345801B1 (en
Inventor
Michael Hoffmann
Andreas Ruess
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler AG
Original Assignee
Daimler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE2003123261 priority Critical patent/DE10323261A1/en
Application filed by Daimler AG filed Critical Daimler AG
Priority to EP20040730533 priority patent/EP1627134B1/en
Publication of EP2345801A1 publication Critical patent/EP2345801A1/en
Application granted granted Critical
Publication of EP2345801B1 publication Critical patent/EP2345801B1/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/04Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/04Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422Separating oil and gas with a centrifuge device
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/16Energy recuperation from low temperature heat sources of the ICE to produce additional power
    • Y02T10/163Turbocompound engines

Abstract

Centrifugal oil separator (10) comprises a rotating component having a drive shaft (12) which is connected via a mechanical coupling to a transmission (14) driven by a crankshaft (16) of an I.C. engine. Preferred Features: The transmission is a toothed wheel change gear. A coupling (18) for controlling the revolutions of the rotating component of the centrifugal oil separator is arranged between the drive shaft and the transmission. The drive shaft is connected to a hydraulic drive which is integrated in a fuel line of the engine. The hydraulic drive is integrated in a low pressure fuel cycle between a fuel conveying pump and a fuel high pressure pump.

Description

  • The invention relates to a centrifugal oil separator for blow-by gases of an internal combustion engine according to the preamble of claim 1.
  • Such centrifugal oil separators are used in venting devices of the crankcase of an internal combustion engine for separating oil from an oil / air mixture, which is derived from the cylinder head of the internal combustion engine. The vent line for the cleaned of the oil air opens into the air intake pipe of the internal combustion engine. The blow-by gases are thus constantly, i. in all operating conditions, extracted from the crankcase of the internal combustion engine and conveyed back into the intake, whereby they are fed to a re-combustion in the cylinders. Such a venting of the blow-by gases reduces the contamination of the oil considerably, which can result in much longer oil change intervals.
  • Such a centrifugal oil separator for blow-by gases of an internal combustion engine is for example from DE 196 07 919 A1 or the DE 199 47 143 C1 known. The Indian DE 196 07 919 A1 described centrifugal oil separator is characterized by a particularly effective oil separation from the blow-by gases, while in the DE 199 47 143 C1 disclosed centrifugal oil separator is constructed in a particularly compact construction.
  • The present invention is based on the object to provide a centrifugal oil separator with a simple and inexpensive rotary drive of its rotating component.
  • The inventive centrifugal oil separator for blow-by gases of an internal combustion engine is characterized in that the drive shaft of the rotating component is connected to a hydraulic drive, which in a fluid line of the Internal combustion engine is integrated. Also in this case, existing components of an internal combustion engine are used for the rotary drive of the drive shaft of the centrifugal oil separator, which is why the centrifugal oil separator of the invention is technically simple and inexpensive to implement.
  • In one embodiment of the invention, the hydraulic drive is integrated into a fuel line leading to the internal combustion engine. In an alternative embodiment of the invention, the hydraulic drive is integrated into a low-pressure fuel circuit between a fuel delivery pump and a high-pressure fuel pump. It can be assumed that the fuel pump in some operating states of the internal combustion engine promotes an excess amount of fuel whose excess energy can thus be used to drive the centrifugal oil separator, without having to apply additional energy.
  • In a further embodiment of the invention may be provided in the centrifugal oil separator between the drive shaft and the hydraulic drive, a controllable clutch for controlling the rotational speed of the rotating component of the centrifugal oil separator.
  • Further features and combinations of features result from the description and the drawings. Concrete embodiments of the invention are shown in simplified form in the drawings and explained in more detail in the following description. Show it:
  • Fig. 1
    a highly simplified block diagram of the rotary drive of a centrifugal oil separator;
    Fig. 2
    a highly simplified block diagram of an alternative embodiment of a centrifugal oil separator according to Fig. 1 ; and
    Fig. 3
    a highly simplified block diagram of the rotary drive of a centrifugal oil separator according to the present invention.
  • The in FIG. 1 Reference numeral 10 characterized centrifugal oil separator for blow-by gases, which are derived from the crankcase of an internal combustion engine, has a rotating component, which is provided with a drive shaft 12 for rotary drive. The rotating component has in the usual way at least one inlet opening for the introduction of blow-by gases from the crankcase of the internal combustion engine, at least one first outflow opening for the discharge of air and at least one second outflow opening for the discharge of oil. It should be noted at this point that the present invention is not limited to a specific construction of a centrifugal oil separator, but rather any constructions of centrifugal oil separators can be used, the rotating component is coupled to a drive shaft.
  • The drive shaft 12 of the rotary member of the centrifugal oil separator 10 is in the embodiment of FIG. 1 by means of a mechanical coupling (not shown) connected to a change-speed gearbox 14. The change-speed gearbox 14 is driven in a conventional manner by the crankshaft 16 of the internal combustion engine. In the centrifugal oil separator 10 according to the in FIG. 1 illustrated embodiment is thus only a mechanical coupling to existing components of the internal combustion engine, in this case the change-speed gearbox required. With a suitable translation of the mechanical coupling between the drive shaft 12 and the change-speed gearbox 14, the required rotational speeds of the centrifugal oil separator 10 can be easily achieved.
  • As in FIG. 1 can be optionally provided between the drive shaft 12 of the centrifugal oil separator 10 and the change-speed gearbox 14, a controllable clutch 18 to control the rotational speed of the drive shaft 12 and thus the rotating member of the centrifugal oil separator 10.
  • FIG. 2 shows an alternative embodiment of FIG. 1 for the rotary drive of a centrifugal oil separator 10. The same components or components of this alternative embodiment are denoted by the same reference numerals as in the embodiment of FIG. 1 Mistake.
  • The drive shaft 12 of the rotary member of the centrifugal oil separator 10 is in the embodiment of FIG. 2 connected to a turbo compound transmission 15 via a suitable mechanical coupling. The turbocompound gear is driven in a known manner by the crankshaft 16 of the internal combustion engine. The coupling of the drive shaft 12 of the rotating component of the centrifugal oil separator 10 with a turbo compound transmission 15 has the advantage that due to the high speed level of the turbocompound transmission 15 in general, no further translation of the mechanical coupling between the drive shaft 12 and the gear 15 is required to the to reach high speeds of the centrifugal oil separator 10. Also with this Embodiment, however, it is possible to provide a controllable clutch 18 for controlling the rotational speed of the drive shaft 12 and the rotating member of the centrifugal oil separator 10 between the drive shaft 12 of the centrifugal oil separator 10 and the turbo compound.
  • While at the in Figures 1 and 2 In the illustrated embodiments of the centrifugal oil separator according to the first aspect of the present invention, the drive shaft of the centrifugal oil separator is coupled with a gear change transmission or a turbo compound transmission, the present invention is basically also applicable to other types of transmission that are driven via the crankshaft of the internal combustion engine.
  • It will now be based on FIG. 3 a rotary drive of a centrifugal oil separator according to the second aspect of the present invention explained in more detail.
  • The basically arbitrarily constructed centrifugal oil separator 10 has a rotating component which is connected to a drive shaft 12. Furthermore, the rotating component of the centrifugal oil separator at least one inlet opening for the introduction of blow-by gases from the crankcase of the internal combustion engine, at least a first discharge opening for the discharge of air and at least a second discharge opening for the discharge of oil.
  • The drive shaft 12 of the rotary member of the centrifugal oil separator is, as in FIG. 3 shown connected to a hydraulic drive 20. The hydraulic drive 20 is integrated in an existing fluid line of the internal combustion engine, so that this rotary drive of the centrifugal oil separator is due to the use of existing components of the internal combustion engine technically simple and inexpensive to implement.
  • In the in FIG. 3 1, the hydraulic drive 20 of the drive shaft 12 of the centrifugal oil separator 10 is integrated into a low-pressure fuel circuit between a fuel feed pump 22 and a high-pressure fuel pump 24. In this case, part of the fuel volume flow delivered by the fuel feed pump is converted into rotational energy in the hydraulic drive 20 and transmitted to the drive shaft 12. As a particular advantage of this embodiment of the rotary drive of the centrifugal oil separator 10 can be considered that by attaching a suitable hydraulic drive 20 in the already existing Fuel circuit relatively simple, the required rotational movement of the drive shaft 12 and thus the rotating member of the centrifugal oil separator 10 can be achieved. In addition, it can be assumed that the fuel delivery pump 22 promotes an excess amount of fuel in some operating states of the internal combustion engine, whose energy can thus be used for the rotary drive of the centrifugal oil separator 10, without having to apply additional energy.
  • In an alternative embodiment of the in FIG. 3 shown rotary drive, the hydraulic drive 20 may also be integrated directly into a leading to the engine fuel line. Further, also in the centrifugal oil separator according to the second aspect of the invention, it is possible to provide a controllable clutch (not shown) between the drive shaft 12 of the rotary member of the centrifugal oil separator 10 and the hydraulic drive 20 to control the rotational speed of the drive shaft 12 of the Centrifugal oil separator to control.

Claims (4)

  1. Centrifugal oil separator (10) for blow-by gases of an internal combustion engine, comprising a rotating component, the at least one inlet opening for the introduction of blow-by gases from the crankcase of the internal combustion engine, at least a first discharge opening for the discharge of air and at least a second outflow opening for the discharge of oil and a drive shaft (12) for the rotary drive of the rotating component,
    characterized,
    in that the drive shaft (12) of the rotating component is connected to a hydraulic drive (20) which is integrated in a fluid line of the internal combustion engine.
  2. Centrifugal oil separator according to claim 1,
    characterized,
    in that the hydraulic drive (20) is integrated in a fuel line leading to the internal combustion engine.
  3. Centrifugal oil separator according to claim 1,
    characterized,
    in that the hydraulic drive (20) is integrated in a low-pressure fuel circuit between a fuel delivery pump (22) and a high-pressure fuel pump (24).
  4. Centrifugal oil separator according to one of claims 1 to 3,
    characterized,
    in that a controllable clutch for controlling the rotational speed of the rotating component of the centrifugal oil separator is provided between the drive shaft (12) of the centrifugal oil separator (10) and the hydraulic drive (20).
EP11002670.5A 2003-05-23 2004-04-30 Centrifugal oil separator for blow-by gas of combustion engine Expired - Fee Related EP2345801B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2003123261 DE10323261A1 (en) 2003-05-23 2003-05-23 Centrifugal oil separator for blow-by gases of an internal combustion engine
EP20040730533 EP1627134B1 (en) 2003-05-23 2004-04-30 Centrifugal oil separator for blow-by gases of an internal combustion engine

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP04730533.9 Division 2004-04-30
EP20040730533 Division EP1627134B1 (en) 2003-05-23 2004-04-30 Centrifugal oil separator for blow-by gases of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP2345801A1 true EP2345801A1 (en) 2011-07-20
EP2345801B1 EP2345801B1 (en) 2014-06-25

Family

ID=33441176

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11002670.5A Expired - Fee Related EP2345801B1 (en) 2003-05-23 2004-04-30 Centrifugal oil separator for blow-by gas of combustion engine
EP20040730533 Expired - Fee Related EP1627134B1 (en) 2003-05-23 2004-04-30 Centrifugal oil separator for blow-by gases of an internal combustion engine

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20040730533 Expired - Fee Related EP1627134B1 (en) 2003-05-23 2004-04-30 Centrifugal oil separator for blow-by gases of an internal combustion engine

Country Status (4)

Country Link
US (1) US7377271B2 (en)
EP (2) EP2345801B1 (en)
DE (1) DE10323261A1 (en)
WO (1) WO2004104381A1 (en)

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WO2004005696A1 (en) * 2002-07-09 2004-01-15 Bosch Automotive Systems Corporation Diesel engine dme fuel supply device
SE527877C2 (en) * 2004-11-29 2006-07-04 Alfa Laval Corp Ab Device for cleaning of crankcase gases
US8075655B2 (en) 2008-06-17 2011-12-13 Cummins Filtration Ip, Inc. Rotative inertial impactor gas-oil separator for internal combustion engine
US7992551B2 (en) * 2008-11-26 2011-08-09 Toyota Motor Engineering & Manufacturing North America, Inc. Oil capturing device having a rotary component
US8807097B2 (en) * 2010-01-27 2014-08-19 Cummins Filtration Ip Inc. Closed crankcase ventilation system
US9194265B2 (en) 2010-01-27 2015-11-24 Cummins Filtration Ip, Inc. Rotating separator with housing preventing separated liquid carryover
US8940068B2 (en) 2010-01-27 2015-01-27 Cummins Filtration Ip Inc. Magnetically driven rotating separator
US8974567B2 (en) 2010-01-27 2015-03-10 Cummins Filtration Ip Inc. Rotating coalescer with keyed drive
DE112012004612T5 (en) 2011-11-04 2014-09-18 Cummins Filtration Ip, Inc. Rotary separator with housing to prevent the entrainment of separated liquid
US8893689B2 (en) * 2010-01-27 2014-11-25 Cummins Filtration Ip, Inc. Crankcase ventilation self-cleaning coalescer with intermittent rotation
SE534773C2 (en) * 2010-04-09 2011-12-13 Alfa Laval Corp Ab A centrifugal separator disposed within a combustion engine
DE102012213877A1 (en) 2012-08-06 2014-02-06 Hengst Gmbh & Co. Kg Free-jet centrifuge with a rotor with at least one recoil nozzle
DE102015205557B4 (en) * 2015-03-26 2017-05-24 Mtu Friedrichshafen Gmbh Internal combustion engine and method for operating an internal combustion engine
DE102015221505B3 (en) * 2015-11-03 2017-02-23 Mtu Friedrichshafen Gmbh Internal combustion engine with an oil separator
DE202016106587U1 (en) 2016-11-24 2018-02-27 Woco Industrietechnik Gmbh separating

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DE19607919A1 (en) 1996-03-01 1997-09-04 Bayerische Motoren Werke Ag Centrifugal oil separator for blow-by-gas IC engine
EP1008391A2 (en) * 1998-12-11 2000-06-14 Fleetguard, Inc. A cone-stack centrifuge
WO2001000969A1 (en) * 1999-06-30 2001-01-04 Volvo Lastvagnar Ab Oil separator for small particles
DE19947143C1 (en) 1999-10-01 2001-04-05 Daimler Chrysler Ag IC motor crankcase air bleeding system has a centrifugal oil separator with a compensation weight and an oil separation zone linked to an axial flow channel for the cleaned air in a simple structure

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DE19607919A1 (en) 1996-03-01 1997-09-04 Bayerische Motoren Werke Ag Centrifugal oil separator for blow-by-gas IC engine
EP1008391A2 (en) * 1998-12-11 2000-06-14 Fleetguard, Inc. A cone-stack centrifuge
WO2001000969A1 (en) * 1999-06-30 2001-01-04 Volvo Lastvagnar Ab Oil separator for small particles
DE19947143C1 (en) 1999-10-01 2001-04-05 Daimler Chrysler Ag IC motor crankcase air bleeding system has a centrifugal oil separator with a compensation weight and an oil separation zone linked to an axial flow channel for the cleaned air in a simple structure

Also Published As

Publication number Publication date
WO2004104381A1 (en) 2004-12-02
EP2345801B1 (en) 2014-06-25
US20060090738A1 (en) 2006-05-04
EP1627134B1 (en) 2011-11-02
EP1627134A1 (en) 2006-02-22
US7377271B2 (en) 2008-05-27
DE10323261A1 (en) 2004-12-16

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